Help. Engine issues
 

Mower is a xt2 kohler engine smart choke. Turn key and fan belt spins just half a rotation. Replaced battery, new solenoid, and new starter. Checked compression. Take off either spark plugs and kicks over. Adjusted valves and still wont kick over. Held open smart choke and shot some starter fluid in. Fan belt spins when i hold the key on. If I spray starter fluid in and hold the smart choke open it runs. Let go of smart choke it dies again. Not sure what I am missing. Engine only turns with starter fluid. Thanks for any help

Just a WAG.....sheared flywheel key?

it would be possibly more productive if you provided some more info on what
engine you have.
I looked up "XT2" and it showed a lawnmower but no "fan belt"
just a conventional flywheel fan covered with fan shroud :bigthink:
and as far as using starting fluid, its not a good thing to do as it washes the lubricant off the cylinder walls/pistons, and causes detonation, neither are good for an engine
Better to use a squirt of gasoline.
Does the engine turn over and start/run once primed?